Hank and John Green collectively run a Youtube channel called “Crash Course” that teaches you everything you’ve ever wanted to know about science, history, math, how things work, etc. It’s quite brilliant, and we highly recommend it.

In this segment, Hank gives us a crash course on pollution and how it affects the environment around us. You may think you know pollution, but in case you need a refresher, check out the short video below.

Have a thought? Share it in the comments below.

If you read this far, we assume you found this post interesting. Please help Blackle Mag thrive by sharing it using the social media buttons below.